Oslo airport pre-boarding time

at OSL for flight to Copenhagen? Is this considered international travel

Sure international flight. What else?

If you entered Norway already the other Schengen zone countries are OK with this - including Denmark. In general: be aware of passport origin (USA) and rest validity date. See official regulation.

Thank you. Do you know bout the pre-boarding time at the Oslo airport? I am wondering how early to get to the airport.

Probably about the same amount of time as if you were flying Orlando to Chicago.

Checking bags?

It is technically international but because of Schengen, you shouldnt have to go through passport control on either end. So treat it like you would a dometic flight in the US.

Thanks everyone!